# red = []
# blue = []
# count = 1
# while count <7:
#     x = int(input("[%d]select red ball:" % (count)))
#     if x in red:
#         print("number %d is already exist in red ball list" % (x))
#     elif x > 32:
#         print("only can select n between 1-32")
#     else:
#         red.append(x)
#         count += 1
# count = 1
# while count <3:
#     y = int(input("[%d]select blue ball:" % (count)))
#     if y in blue:
#         print("number %d is already exist in blue ball list" % (x))
#     elif y > 32:
#         print("only can select n between 1-32")
#     else:
#         blue.append(y)
#         count += 1
# print("Red ball:%s" % (red))
# print("Blue ball:%s" % (blue))

# count = 0
# names = [1,2,3,4,5, 7,8,9, 11,12]
# while count < len(names):
#     print(names[count])
#     count +=1
# count = 100
# names = []
# while count > 50:
#     names.append(count)
#     count -=1
# count = 0
# while count <51:
#     names.append(count)
#     count +=1
# print(names)




# count = 0
# while count < 101:
#     if count % 2 ==0:
#         print(count)
#     count += 1

# c = 0
# count = 2
# while count <101:
#     if count % 2 ==0:
#         c += count
#     else:
#         c -= count
#     count +=1
# print(c)


# x = input(':')
# y = input(':')
# z = input(':')
# s = "{0},{1},{2}"
# print(s.format(x,y,z))




# a = int(input(":"))
# if a % 4 == 0 and a % 100 != 0 or a % 400 ==0:
#     print('shi')
# else:
#     print('bu')


# year = 0
# count = 10000
# while count < 20000:
#     count = count + count * 0.0325
#     year += 1
# print(str(year))


# name = ''
# count = 1
# while count < 5:
#     print(name.ljust(count,'*'))
#     count +=1
# while count > 0:
#     print(name.ljust(count,'*'))
#     count -=1


# hihg = 100
# count = 0
# run = 0
# while count < 10:
#     run += hihg
#     hihg /=2
#     count +=1
# print(str(run))